pub unsafe extern "system" fn SQLPrimaryKeysW(
    hstmt: *mut c_void,
    szcatalogname: *const u16,
    cchcatalogname: i16,
    szschemaname: *const u16,
    cchschemaname: i16,
    sztablename: *const u16,
    cchtablename: i16
) -> i16